2-{3-[1-(2-cyclopropylethyl)-6-fluoro-4-hydroxy-2-oxo-1,2-dihydroquinolin-3-yl]-1,1-dioxo-1,4-dihydrobenzo[1,2,4]thiadiazin-7-yloxy}-2-methylpropionic acid ethyl ester 在
水 、 sodium hydroxide 作用下,
以
甲醇 为溶剂,
反应 18.0h,
以84%的产率得到2-{3-[1-(2-cyclopropylethyl)-6-fluoro-4-hydroxy-2-oxo-1,2-dihydro-quinolin-3-yl]-1,1-dioxo-1,4-dihydro-1-benzo[1,2,4]thiadiazin-7-yloxy}-2-methylpropionic acid